In a post-retirement interview with Belgian TV, Justine Henin reflected on her infamous 2003 confrontation with Serena Williams in the semifinals of the French Open. The seven-time Grand Slam champion said "it is not the best memory," but stopped way short of apologizing for her controversial gesture which led to a Serena collapse.
If your memory needs some jogging, read this post from last May for a refresher on the incident, which actually started on the point before Henin raised her hand. Or watch the clip below. Or do both.